Two employees, who were not identified, had unspecified injuries, but a sheriff's department official said they were taken to Huntington Hospital in Pasadena to be treated for burns.

No active fire was started by the explosion, the cause of which remained under investigation.

Los Angeles County Fire spokesman Al Yanagisawa said that someone smelled gas inside the store, so two employees were sent to an electrical closet to shut off a gas main. That’s when explosion occurred, at about 10 a.m., he added.

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Yanagisawa said there was minimal damage to the building, which remained closed for the investigation.